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Pfalz Flugzeugwerke
Pfalz Flugzeugwerke was a World War I German aircraft manufacturer, located at the Speyer airfield in the Palatinate (German: Pfalz). They are best known for their series of fighters, notably the Pfalz D.III and Pfalz D.XII. The company went bankrupt after the Armistice, when the French occupation forces confiscated all of the equipment, but the factory was re-used by various other companies until re-forming in 1997. Today they are a parts manufacturer referred to as PFW. Early history Pfalz was the brainchild of Alfred Eversbusch, son of a foundry owner in Neustadt an der Weinstraße. It appears that he had built his own aircraft between 1912 and 1913, although the exact origin of the design is unclear. On June 3, 1913, the Pfalz company was registered, consisting of Alfred, his brother Ernst, and his brother-in-law Willy Sabersky-Müssigbrodt, as well as several investors: Richard and Eugen Kahn, and August Kahn (unrelated). They initially proposed to build designs from A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speyer
Speyer (, older spelling ''Speier'', French: ''Spire,'' historical English: ''Spires''; pfl, Schbaija) is a city in Rhineland-Palatinate in Germany with approximately 50,000 inhabitants. Located on the left bank of the river Rhine, Speyer lies south of Ludwigshafen and Mannheim, and south-west of Heidelberg. Founded by the Romans, it is one of Germany's oldest cities. Speyer Cathedral, a number of other churches, and the Altpörtel (''old gate'') dominate the Speyer landscape. In the cathedral, beneath the high altar, are the tombs of eight Holy Roman Emperors and German kings. The city is famous for the 1529 Protestation at Speyer. One of the ShUM-cities which formed the cultural center of Jewish life in Europe during the Middle Ages, Speyer and its Jewish courtyard was inscribed on the UNESCO World Heritage List in 2021. History The first known names were ''Noviomagus'' and ''Civitas Nemetum'', after the Teutonic tribe, Nemetes, settled in the area. The name ''Spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF), oriented strand board (OSB) and particle board (chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. This alternation of the grain is called ''cross-graining'' and has several important benefits: it reduces the tendency of wood to split when nailed at the edges; it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions. There is usually an odd number of plies, so that the sheet is balanced—this reduces warping. Because plywood is bonded with grains running against one another and with an odd number of composite part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fokker Dr
Fokker was a Dutch aircraft manufacturer named after its founder, Anthony Fokker. The company operated under several different names. It was founded in 1912 in Berlin, Germany, and became famous for its fighter aircraft in World War I. In 1919 the company moved its operations to the Netherlands. During its most successful period in the 1920s and 1930s, it dominated the civil aviation market. Fokker went into bankruptcy in 1996, and its operations were sold to competitors. History Fokker in Germany At age 20, while studying in Germany, Anthony Fokker built his initial aircraft, the ''Spin'' (Spider)—the first Dutch-built plane to fly in his home country. Taking advantage of better opportunities in Germany, he moved to Berlin, where in 1912, he founded his first company, Fokker Aeroplanbau, later moving to the Görries suburb just southwest of Schwerin (at ), where the current company was founded, as Fokker Aviatik GmbH, on 12 February 1912. World War I Fokker capitalized o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorenfabrik Oberursel
Motorenfabrik Oberursel A.G. was a German manufacturer of automobile, locomotive and aircraft engines situated in Oberursel (Taunus), near Frankfurt (Main), Germany. During World War I it supplied a major 100 hp-class rotary engine that was used in a number of early-war fighter aircraft designs. In 1921 the company merged with Deutz AG, and then again in 1930 with Humboldt-Deutz Motoren, and finally in 1938 with Klöcknerwerke AG. From this point on they were known as the Klöckner-Humboldt-Deutz Oberursel factory, known primarily for their locomotive engines. Today they are part of Rolls-Royce Deutschland, and produce one family of their jet engines. The factory in Oberursel is claimed to be the oldest surviving aircraft engine factory in the world. Early years The company had its origins in 1891, when Willy Seck invented a new gasoline fuel injection system and produced a small one-cylinder stationary engine of about 4 hp, which he called the Gnom. The following year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adlershof
Adlershof (, literally "Eagle's Court") is a locality (') in the borough (') Treptow-Köpenick of Berlin, Germany. Adlershof is home to the new City of Science, Technology and Media ( WISTA), located on the southwestern edge of the locality. History A part of the area known today as the "City of Science, Technology and Media", was once known as the Johannisthal Air Field. Germany's first motorized aircraft took off from here at the beginning of the 20th century. Albatros, Fokker, Rumpler and Wright made Adlershof-Johannisthal famous. In 1912 the German Experimental Institute for Aviation (Deutsche Versuchsanstalt für Luftfahrt – DVL) made Adlershof its headquarters. Laboratories, motor test beds, wind tunnels and hangars were erected in the 20s and 30s and are historical landmarks today. World War I Adlershof is particularly well known for a series of competitions between various aviation firms' fighter aircraft designs that were held there starting in 1918. This was the first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pfalz Dr
Pfalz, Pfälzer, or Pfälzisch are German words referring to Palatinate. They may refer to: Places *Pfalz, the Palatinate (region) of Germany **Nordpfalz, the North Palatinate **Vorderpfalz, the Anterior Palatinate **Südpfalz, the South Palatinate **Westpfalz, the West Palatinate *Pfalz, the Palatinate wine region of Germany **Pfälzische Weinkönigin, the Palatine Wine Queen elected representative of the region *the ''Pfalz'', nickname for Pfalzgrafenstein Castle, Germany *Pfälzerwald, the Palatinate Forest *Rheinland-Pfalz, the current federal German state of Rhineland-Palatinate Historic states *''Kurpfalz'', the Electoral Palatinate of the Holy Roman Empire. Historic houses and states include: **Pfalz-Birkenfeld, the House of Palatinate-Birkenfeld ** Pfalz-Birkenfeld-Bischweiler ** Pfalz-Birkenfeld-Gelnhausen ** Pfalz-Birkenfeld-Zweibrücken **Pfalz-Kleeburg ** Pfalz-Landsberg ** Pfalz-Lautern ** Pfalz-Mosbach ** Pfalz-Mosbach-Neumarkt ** Pfalz-Neuburg **Pfalz-Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jasta 2
Jasta 2 (Jagdstaffel Zwei in full and also known as ''Jasta Boelcke'') was one of the best-known German Luftstreitkräfte Squadrons in World War I. Its first commanding officer was the great aerial tactician Oswald Boelcke, and it was the incubator of several notable aviation careers. Formation As one of the first ''Jastas'', Jasta 2 had no parent unit and there was therefore no mass transfer of personnel from existing ''Staffeln''. Assigned to the German 1st Army, the unit was created with the intention that Hauptmann Oswald Boelcke would be its leader. Jasta 2 was formed on 10 August 1916 at Bertincourt, France. Boelcke was ordered to return from an inspection tour of south-eastern theatres of the War to take command and arrived back on the Western Front later that month. After Max Immelmann's death, Kaiser Wilhelm II had ordered Boelcke grounded for a month to avoid losing him in combat soon after Immelmann. He had become such an important hero to the German public, as well ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ersatz
An ersatz good () is a substitute good, especially one that is considered inferior to the good it replaces. It has particular connotations of wartime usage. Etymology ''Ersatz'' is a German word literally meaning ''substitute'' or ''replacement''. Although it is used as an adjective in English, it is a noun in German. In German orthography noun phrases formed are usually represented as a single word, forming compound nouns such as ''Ersatzteile'' ("spare parts") or ''Ersatzspieler'' ("substitute player"). While ''ersatz'' in English generally means that the substitution is of unsatisfactory or inferior quality compared with the "real thing", in German, there is no such implication: e.g., ''Ersatzteile'' 'spare parts' is a technical expression without any implication about quality, whereas ''Kaffeeersatz'' 'coffee substitute' is not made from coffee beans, and is thus inferior. The term for inferior substitute in German would be ''Surrogat'', which is cognate to English word "surr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens-Schuckert D
Siemens-Schuckert (or Siemens-Schuckertwerke) was a German electrical engineering company headquartered in Berlin, Erlangen and Nuremberg that was incorporated into the Siemens AG in 1966. Siemens Schuckert was founded in 1903 when Siemens & Halske acquired Schuckertwerke. Subsequently, Siemens & Halske specialized in communications engineering and Siemens-Schuckert in power engineering and pneumatic instrumentation. During World War I Siemens-Schuckert also produced aircraft. It took over manufacturing of the renowned Protos vehicles in 1908. In World War II, the company had a factory producing aircraft and other parts at Monowitz near Auschwitz. There was a workers camp near the factory known as Bobrek concentration camp. The Siemens Schuckert logo consisted of an S with a smaller S superimposed on the middle with the smaller S rotated left by 45 degrees.Siemens used this as a theme for their logos with absorbed companies: Siemens & Halske's logo was a large S with a small sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary Engine
The rotary engine is an early type of internal combustion engine, usually designed with an odd number of cylinders per row in a radial configuration. The engine's crankshaft remained stationary in operation, while the entire crankcase and its attached cylinders rotated around it as a unit. Its main application was in aviation, although it also saw use in a few early motorcycles and automobiles. This type of engine was widely used as an alternative to conventional inline engines (straight or V) during World War I and the years immediately preceding that conflict. It has been described as "a very efficient solution to the problems of power output, weight, and reliability". By the early 1920s, the inherent limitations of this type of engine had rendered it obsolete. Description Distinction between "rotary" and "radial" engines A rotary engine is essentially a standard Otto cycle engine, with cylinders arranged radially around a central crankshaft just like a conventional ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens-Halske Sh
Siemens & Halske AG (or Siemens-Halske) was a German electrical engineering company that later became part of Siemens. It was founded on 12 October 1847 as ''Telegraphen-Bauanstalt von Siemens & Halske'' by Werner von Siemens and Johann Georg Halske. The company, located in Berlin-Kreuzberg, specialised in manufacturing electrical telegraphs according to Charles Wheatstone's patent of 1837. In 1848, the company constructed one of the first European telegraph lines from Berlin to Frankfurt am Main. Siemens & Halske was not alone in the realm of electrical engineering. In 1887, Emil Rathenau had established ''Allgemeine Elektrizitäts-Gesellschaft'' (AEG), which became a long-time rival. In 1881, Siemens & Halske built the Gross-Lichterfelde Tramway, the world's first electric streetcar line, in the southwestern Lichterfelde suburb of Berlin, followed by the Mödling and Hinterbrühl Tram near Vienna, the first electrical interurban tram in Austria-Hungary. 1882 saw the openi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Observation Balloon
An observation balloon is a type of balloon that is employed as an aerial platform for intelligence gathering and artillery spotting. Use of observation balloons began during the French Revolutionary Wars, reaching their zenith during World War I, and they continue in limited use today. Synonyms include espionage balloon, reconnaissance balloon, or surveillance balloon. Historically, observation balloons were filled with hydrogen. The balloons were fabric envelopes filled with hydrogen gas, whose flammable nature led to the destruction of hundreds of balloons on both sides. Observers manning these observation balloons frequently had to use a parachute to evacuate their balloon when it came under attack. To avoid the potentially flammable consequences of hydrogen, observation balloons after World War I were often filled with non-flammable helium. Typically, balloons were tethered to a steel cable attached to a winch that reeled the gasbag to its desired height (usually 1,000-1,5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
